Write a program to convert from metric units to standard units. Specification Cr

Question

Write a program to convert from metric units to standard units.

Specification

Create a MetricConverter class with the following public static functions to convert from metric units to standard units:

double KG_lbs(double kg)

double KM_miles(double km)

double Liters_quarts(double liters)

double Celsius_fahrenheit(double celsius)

Each function will accept a metric units value and return the corresponding standard units value.

Create a MetricConverterTest program to test the functionality of the MetricConverter class and run the program from this simple menu:

KG to lbs

KM to Miles

Liters to Quarts

Celsius to Fahrenheit

Exit

Create the following "menu" methods that are called from the corresponding menu option:

void convert_KG_lbs()

void convert_KM_miles()

void convert_Liters_quarts()

void convert_Celsius_fahrenheit()

Each of these menu methods should:

get input from the user

pass the input to the appropriate static MetricConverter function to perform the calculation

display the result

Explanation / Answer

MetricConverter.java

public class MetricConverter {
  
   //Default constructor
   public MetricConverter()
   {
      
   }
  
   //This method will converts kgs to lbs
   double KG_lbs(double kg)
   {
       return kg*2.20462;
   }
  
   //This method will converts kms to miles
   double KM_miles(double km)
   {
       return km*0.621371;
   }
  
   //This method will converts liters to quarts
   double Liters_quarts(double liters)
   {
       return liters*1.05669;
   }
  
   //This method will converts celsius to fahrenheit
   double Celsius_fahrenheit(double celsius)
   {
       return (celsius*1.8)+32;
   }

}

______________________

MetricConverterTest.java

import java.text.DecimalFormat;
import java.util.Scanner;

public class MetricConverterTest {
   //Scanner object is used to get the inputs entered by the user
   static Scanner sc= new Scanner(System.in); ;
  
   //DecimalFormat class is used to format the output
   static DecimalFormat df=new DecimalFormat("#.##");
   public static void main(String[] args) {

       //Declaring the variable
       int choice;

//Displaying the menu
       while (true) {
           System.out.println(" MENU");
           System.out.println("------------------");
           System.out.println("1.KG to lbs");
           System.out.println("2.KM to Miles");
           System.out.println("3.Liters to Quarts");
           System.out.println("4.Celsius to Fahrenheit");
           System.out.println("5.Exit");
          
           //Getting the choice entered by the user
           System.out.print("Enter choice :");
           choice = sc.nextInt();

           //Based on the user choice the corresponding case will be executed
           switch (choice) {
           case 1: {
               //Calling the method
               convert_KG_lbs();
          
               continue;
           }
           case 2: {
               //Calling the method
               convert_KM_miles();
              
               continue;
           }
           case 3: {
               //Calling the method
               convert_Liters_quarts();
              
               continue;
           }
           case 4: {
               //Calling the method
               convert_Celsius_fahrenheit();
               continue;
           }
           case 5: {
               System.out.println("** Program Exit **");
               break;
           }
           }
break;
       }

   }

   //This method will convert the celsius to fahrenheit
   private static void convert_Celsius_fahrenheit() {
       MetricConverter mc=new MetricConverter();
       System.out.print("Enter the value of Celsius (c) :");
       double celsius=sc.nextDouble();
       double fah=mc.Celsius_fahrenheit(celsius);
       System.out.println(celsius+"(c) to Fahrenheit(F) :"+df.format(fah));

   }
   //This method will convert the liters to quarts
   private static void convert_Liters_quarts() {
       MetricConverter mc=new MetricConverter();
       System.out.print("Enter the value of Liters (li) :");
       double liters=sc.nextDouble();
       double quarts=mc.Liters_quarts(liters);
       System.out.println(liters+"(li) to quarts :"+df.format(quarts));

      
   }

   //This method will convert the kilometers to miles
   private static void convert_KM_miles() {
       MetricConverter mc=new MetricConverter();
       System.out.print("Enter the value of Kilometers (km) :");
       double kms=sc.nextDouble();
       double miles=mc.KM_miles(kms);
       System.out.println(kms+"(km) to miles :"+df.format(miles));

      
   }

   //This method will convert the kgs to lbs
   private static void convert_KG_lbs() {
       MetricConverter mc=new MetricConverter();
       System.out.print("Enter the value of Kilometers (kg) :");
       double kg=sc.nextDouble();
       double lbs=mc.KG_lbs(kg);
       System.out.println(kg+"(kg) to lbs :"+df.format(lbs));
      
   }

}

______________________

Output:

MENU
------------------
1.KG to lbs
2.KM to Miles
3.Liters to Quarts
4.Celsius to Fahrenheit
5.Exit
Enter choice :1
Enter the value of Kilometers (kg) :20
20.0(kg) to lbs :44.09

MENU
------------------
1.KG to lbs
2.KM to Miles
3.Liters to Quarts
4.Celsius to Fahrenheit
5.Exit
Enter choice :2
Enter the value of Kilometers (km) :20
20.0(km) to miles :12.43

MENU
------------------
1.KG to lbs
2.KM to Miles
3.Liters to Quarts
4.Celsius to Fahrenheit
5.Exit
Enter choice :3
Enter the value of Liters (li) :20
20.0(li) to quarts :21.13

MENU
------------------
1.KG to lbs
2.KM to Miles
3.Liters to Quarts
4.Celsius to Fahrenheit
5.Exit
Enter choice :4
Enter the value of Celsius (c) :20
20.0(c) to Fahrenheit(F) :68

MENU
------------------
1.KG to lbs
2.KM to Miles
3.Liters to Quarts
4.Celsius to Fahrenheit
5.Exit
Enter choice :5
** Program Exit **

___________Thank You

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